21 Coniston Close, Erith DA8 3BD

Semi-Detached house · Built 1930-1949 · 71 m² · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Low energy lighting(optional, beyond D)£20 – £50typical£214.9 yrs+0.1 pts
Heating controls(optional, beyond D)£400typical£2020.5 yrs+0.7 pts
Band A condensing boiler(optional, beyond D)£2,600typical£3350+ yrs+1.1 pts
Solar water heating(optional, beyond D)£5,000typical£4250+ yrs+1.4 pts
Solar photovoltaic panels(optional, beyond D)£4,500 – £9,000typical£5050+ yrs+1.7 pts
Solid wall insulation(optional, beyond D)£9,000typical£5850+ yrs+2.0 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. Savings are restated at the fuel prices assumed in July 2026. Points per measure are estimated from 19.9 million certificates and rescaled to this home’s own certificate delta; the total is the register’s figure.

Running costs

£1,347
per year at grade D
£1,143
per year at grade D

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2010, states £839 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

14 October 2011£233,000
13 March 1995£74,000

Estimated today: £485,580 HPI-indexed estimate, not a valuation

Coniston Close: 35 sales since 1995 · £382,700 average over 10 years

Schools nearby

The schools’ own performance — Progress 8 shows value added, not just raw results.

SchoolPhaseDistanceProgress
Christ Church (Erith) CofE Primary SchoolPrimary0.2 mi
Peareswood Primary SchoolPrimary0.5 mi
Fairford Academy BarnehurstPrimary0.5 mi
Leigh Academy BexleySecondary0.4 miProgress 8 -0.95 · well below average (2023/24)
Trinity Church of England School, BelvedereSecondary0.9 miProgress 8 -0.54 · well below average (2023/24)
Haberdashers' Crayford AcademySecondary1.5 miProgress 8 -0.13 · average (2023/24)

Schools from the DfE register, performance from the KS4 performance tables. Progress 8 is a GCSE measure, so primaries have none. Distance is straight-line from the postcode, not a catchment: admission is decided by the school, not by us.

Area context

Police-recorded crime for the wider neighbourhood, not this address. We grade homes, never neighbourhoods — so this is reported as a count, not a rating.

11.9
crimes a month
119
in the last 12 months
Violence and sexual offences
most common · 41% of the total

Police.uk street-level data for LSOA E01000367, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Coniston Close

How this home sits against its street.

19
graded homes
64.6
average score
D
most common grade
-6.6
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.